Love the shirt. I don't own a whole lot of merino wool, so I can't say much about how it compares to other products. It's not as soft as I was led to believe, but it is still very good. I'm a slimmer guy 5'10.5", 135 lbs. Bought a Small. It fits me very well. Has a little room to look more like a hoodie than a baselayer, which is nice. it has a very tapered athletic look. Sleeves are a good length. The shirt doesn't go far below the waist. The back is a little longer than the front though. Hood looks less dorky if the shirt isn't fully zipped, haha. Even for me though, the neck area is a bit tight when th shirt is fully zipped.